Characters — Browse every character across the manga and anime catalogue

Aina Yoshiwara

Aina is a first year at Oumi Women's University. She joins Grand Blue Diving Club after getting to know Iori and Kouhei. She is a really shy girl and hates having to expose her ski

Azusa Hamaoka

Azusa Hamaoka is a third-year at Oumi University and is a part of the intercollegiate diving club with Izu University. Known for her very outgoing and exhibitionist personality, sh

Bar Master

Bar Master is the manager of the bar where Ryuujirou Kotobuki works part-time as a bartender.

Carina

She is a German woman who's come to Japan for 90 days. She's a big fan of the mobile game Blue Spring.

Chief

Chisa Kotegawa

Chisa Kotegawa is Iori's cousin and a first-year mechanical engineering student at Izu University. Chisa appears to more level-headed and serious compared to other characters. She

German Lecturer

German lecturer at Izu University.

Hajime Nojima

He is a first year Mechanical Engineering student at Izu University. Nojima is a tall and self-proclaimed handsome young man.

Iori Kitahara

Iori Kitahara is a first year Mechanical Engineering student at Izu University. Despite no initial interest, Iori comes to love diving and spending time with the members of the clu

Kanako Iida

Aina's freshmen friend and a first year student at Oumi Women's University.

Kaya Mizuki

Famous voice actor and idol who is worshipped by Kouhei. Her real name is Maya.

Keiko Suzuki

Aina's freshmen friend and a first year student at Oumi Women's University. She admits that whenever someone is innocent and pure, she feels the need to corrupt them.

Kenta Fujiwara

One of Iori's classmates at Izu University. A muscular man who is jealous of Iori supposedly getting Chisa's affection.

Kitahara Chichi

He is Iori's father and Chisa's uncle.

Kiyoko Kamio

Aina's freshmen friend and a first year student at Oumi Women's University.

Kouhei Imamura

A first-year Mechanical Engineering student at Izu University. He is Iori's best friend and a diehard otaku, perceived to be a lolicon by his acquaintances. He happens to be partic

Kudou

The Captain of the Tennis Club "Tinkerbell" and a beautiful young man who is attracted to Azusa. Kudou is an arrogant womanizer that would do almost anything to achieve his goal. H

Kugelschreiber

Maki

Nanaka Kotegawa

Iori's Elder Cousin. When Iori comes to Grand Blue he doesn't recognise her at first since she had become very beautiful and gets attracted to her only to find out later that she h

Naomi Otoya

Otoya Naomi is a high school student who loves diving. He is the captain of the diving club at his school and the coworker of Iori and Sakurako.

Rie Oohashi

She is a first year student at Oumi Women's University and Yuu Mitarai's childhood friend.

Ryuujirou Kotobuki

He is a third year Mechanical Engineering student at Izu University.

Sakurako Busujima

She is a student at Oumi Women's University and the coworker of Iori Kitahara and Naomi Otoya. She has a crush on Otoya Naomi.